Manufacture of glass lamps, &amp;c.



PATENTED JUNE 28, 1904;

E. w. BRYGE. v MANUFACTURE OF GLASS LAMPS, &o.

APPLICATION FILED APB.15. 1904.

N0 MODEL.

INVENTOR a 0 4 Van N I sk N S s E N LW Patented June 28, 1904.

UNITED STATES PATENT OFFICE.

EDWIN WV. BRYCE, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO UNITED STATESGLASS COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPO- RATION OFPENNSYLVANIA.

MANUFACTURE OF GLASS LAMPS, 800.

SPECIFICATION forming part of Letters Patent No. 763,849, dated June 28,1904.

Application filed April 15, 1904.

To all whom it may concern:

Be it known that I, EDWIN W. BRYCE, of Pittsburg, Allegheny county,Pennsylvania, have invented a new and useful Improvement in theManufacture of Glass Lamps and other Articles, of which the followingisa full, clear, and exact description, reference being had to theaccompanying drawings, forming part of this specification, in whichFigure 1 is a side elevation, partly in section, showing the blank withthe foot attached. Fig. 2 is a plan view of the same. Fig. 3 is a viewsimilar to Fig. 1, showing the blow-mold in which the article isfinished.

I5 The purpose of my invention is to provide means for forming glasslamps and other articles having feet or stems of glass in such way as toproduce the article with minimum cost and labor. In the practice of theinven- 0 tion I form a glass foot or stem and then having applied it tothe end of a press-mold which has been filled with glass I press ahollow blank for the bowl in the mold and simultaneously weld it to thestem. I then blow the blank into the shape of a finished bowl while itis still attached to the stem.

In the accompanying drawings, in which I .show apparatus suitable forthe practice of my invention, 2 is a sectional press-mold for 3 theblank, having at its base a neck-ring 3 and a vertically-movable plunger4 and having its upper end open for receiving the glass and applying thestcm or foot.

In the practice of the invention a gathering of glass is placed in thecavity of the mold 2.

A glass foot or stem 5 is then placed with the end to be attached to thebowl at the open upper end of the mold, and it is held down by a slidingcatch 6 or other suitable device, the

4 forked end of which embraces the stem 5 and bears against a rib orcollar 7 thereon. The

plunger 4: is then raised into the mold-cavity and displaces the glassupwardly against the Serial No. 203,263. (No model.)

end of the stem, to which it immediately welds and attaches itself andalso forms a cavity in the glass, thus making a bowl-blank firmlyattached to the stem. The plunger is then retracted, during whichoperation the glass of the blank is upheld by its attachment to thestem. The mold is then opened, and by means of the neck-ring 3 the blankand foot are removed from the mold 2 and taken to a blowmold, the matrixof which is of the size and shape required for the bowl, and with asuitable supply of compressed air the blank is blown therein intofinished form, its end being still held by the neck-ring in which it isformed in the mold 2.

The advantages of the invention are that it reduces largely the skillrequired in making glass lamps with stems, and as the glass whenattached to the stem has all the initial heat of the blank it produces amuch better weld than heretofore.

Within the scope of the invention as defined in the claims the apparatusmay be modified, since What I claim is 1. The method herein described ofmaking glass articles, which consists in forming a blank andsimultaneously attaching it to a glass stem or piece and then blowingthe attached blank; substantially as described.

blowing the attached blank; substantially as described.

In testimony whereof I have hereunto set my hand.

EDIVIN IV. BRYCE.

Witnesses:

DANIEL C. RYELEY, THOMAS IV. BAKEWELL.

